CN219677528U - Sealing structure, battery cell and battery pack - Google Patents
Sealing structure, battery cell and battery pack Download PDFInfo
- Publication number
- CN219677528U CN219677528U CN202320143040.6U CN202320143040U CN219677528U CN 219677528 U CN219677528 U CN 219677528U CN 202320143040 U CN202320143040 U CN 202320143040U CN 219677528 U CN219677528 U CN 219677528U
- Authority
- CN
- China
- Prior art keywords
- sealing
- injection hole
- liquid injection
- seal
- elastic deformation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 143
- 239000007788 liquid Substances 0.000 claims abstract description 89
- 238000002347 injection Methods 0.000 claims abstract description 56
- 239000007924 injection Substances 0.000 claims abstract description 56
- 230000005489 elastic deformation Effects 0.000 claims abstract description 47
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 19
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 13
- 229910052734 helium Inorganic materials 0.000 abstract description 11
- 239000001307 helium Substances 0.000 abstract description 11
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 abstract description 11
- 206010011469 Crying Diseases 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 7
- 239000000565 sealant Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Filling, Topping-Up Batteries (AREA)
Abstract
The utility model provides a sealing structure, an electric core and a battery pack, which comprises a top cover, an assembly sinking table, a liquid injection hole, a first sealing part and a second sealing part, wherein the liquid injection hole is formed in the top cover, the assembly sinking table and the liquid injection hole are sequentially formed in the direction from the top end to the bottom end of the top cover, and the second sealing part is accommodated in the assembly sinking table and cannot fall into the liquid injection hole; the first sealing part seals the liquid injection hole; the second sealing part comprises a fixing part and an elastic deformation part, the edge part of the second sealing part forms the fixing part, the fixing part is welded with the assembly sinking table, the middle part of the second sealing part protrudes out of the plane where the fixing part is located to form the elastic deformation part, the elastic deformation part is connected with the first sealing part, and the elastic deformation part is arranged to enable the first sealing part to move along the pressing direction when being pressed so as to release the sealing of the liquid injection hole. Through this structure makes can carry out the seal detection after removing sealed notes liquid hole when helium is examined, effectively detects whether second sealing portion welds the seal, reduces the weeping risk.
Description
Technical Field
The present utility model relates to batteries, and more particularly, to a sealing structure, a battery cell, and a battery pack.
Background
In the industrial production of the battery cell, before the sealing nails are welded, the sealing glue nails for blocking the liquid injection holes are packaged in the liquid injection holes along with the sealing nails; after the sealing nail is welded, helium check is needed to check whether the liquid injection hole is sealed. However, the existing sealant nails and the existing sealant nails are of split structures, and although the sealant nails can improve the tightness of the battery cells, gaps possibly existing in the welding of the sealant nails cannot be detected by helium detection, so that the detection efficiency of the helium detection is greatly reduced, and the leakage risk is brought to the battery cells with poor welding of the sealant nails.
Disclosure of Invention
The utility model aims to overcome the defect that a gap possibly existing in sealing nail welding cannot be detected by helium detection in the prior art, and provides a sealing structure, an electric core and a battery pack.
The utility model solves the technical problems by the following technical scheme:
the utility model provides a sealing structure, which comprises a top cover, an assembly sinking table, a liquid injection hole, a first sealing part and a second sealing part, wherein the liquid injection hole is formed in the top cover, the assembly sinking table and the liquid injection hole are sequentially arranged in the direction from the top end to the bottom end of the top cover, and the second sealing part is accommodated in the assembly sinking table and cannot fall into the liquid injection hole; the first sealing part seals the liquid injection hole; the second sealing part comprises a fixing part and an elastic deformation part, the edge part of the second sealing part forms the fixing part, the fixing part is welded with the assembly sinking table, the middle part of the second sealing part protrudes out of the plane where the fixing part is located to form the elastic deformation part, the elastic deformation part is connected with the first sealing part, and the elastic deformation part is arranged to enable the first sealing part to move along the pressing direction when being pressed so as to release the sealing of the liquid injection hole.
In the technical scheme, the second sealing part is accommodated in the assembly sinking table, and the fixing part formed at the edge part of the second sealing part is welded with the assembly sinking table, so that the liquid injection hole is sealed, and liquid leakage is avoided; the middle part of the second sealing part is provided with an elastic deformation part which is connected with the first sealing part, the first sealing part seals the liquid injection hole, and when the elastic deformation part is pressed, the sealing of the liquid injection hole can be released, so that the sealing structure after the sealing of the liquid injection hole is released can be subjected to sealing detection when helium is detected, whether the second sealing part is welded and sealed or not is effectively detected, and the liquid leakage risk is reduced.
Preferably, the first sealing part comprises a liquid hole sealing part and a first connecting part, one end of the first connecting part is connected with the elastic deformation part, the other end of the first connecting part is connected with the liquid hole sealing part, the outer peripheral surface of the liquid hole sealing part is matched with the inner peripheral surface of the liquid injection hole, and the outer diameter of the first connecting part is smaller than the inner diameter of the liquid injection hole.
In the technical scheme, the first sealing part comprises a liquid hole sealing part and a first connecting part, the liquid hole sealing part and the elastic deformation part are connected through the first connecting part, the structure is simple, and the liquid hole sealing part can be directly pushed to contact the sealing of the liquid injection hole by pressing the elastic deformation part; the outer peripheral surface of the liquid hole sealing part is matched with the inner peripheral surface of the inner periphery of the liquid injection hole, and when the outer diameter of the first connecting part is smaller than the inner diameter of the liquid injection hole so as to press the elastic deformation part, the liquid hole sealing part can continuously pass through the liquid injection hole, so that the detection of helium detection is facilitated.
Preferably, the liquid hole sealing portion is made of a rubber material.
In the technical scheme, the liquid hole sealing part is made of rubber materials, so that the sealing effect is good; and the rubber material is easy to obtain, low in cost and good in elasticity.
Preferably, the elastic deformation part is located at one side of the first sealing part and is correspondingly formed with an arc-shaped groove, and the first connecting part is connected in the arc-shaped groove.
In this technical scheme, the one side of elastic deformation portion towards first sealing portion is formed with the arc recess, and the end connection of first connecting portion is in the arc recess for direct promotion first connecting portion removes when pressing the elastic deformation portion.
Preferably, the first connecting portion is connected to the lowest point of the arc-shaped groove.
In this technical scheme, first connecting portion is located the minimum point position of arc recess for more accurate laborsaving when pressing, elastic deformation portion takes place to warp and can make first sealing portion take place to remove.
Preferably, the second sealing portion and the elastic deformation portion are made of the same material and are integrally formed.
In this technical scheme, second sealing part and elastic deformation portion material unanimity and integrated into one piece, easily preparation, and make whole structure can not appear other gaps and bring the weeping risk, sealed effectual.
Preferably, the material thickness at the elastically deforming portion is smaller than the material thickness of the other portion of the second sealing portion.
In the technical scheme, the material thickness of the elastic deformation part is smaller than that of other parts of the second sealing part, so that the pressing effect of the elastic deformation part is easier and labor-saving.
Preferably, the second sealing part further comprises second connecting parts located at two opposite sides of the fixing part, the fixing part is welded with the bottom surface of the assembly sinking table, and the second connecting parts are welded with the side walls of the assembly sinking table.
In this technical scheme, the second connecting portion of fixed part opposite both sides welds with the lateral wall of the heavy platform of assembly for the second sealing portion is more stable in the heavy platform of assembly, and sealed effect is better.
The utility model further provides a battery cell, which comprises the sealing structure.
In this technical scheme, the battery cell can directly be used aforementioned seal structure, reduces the weeping risk of battery cell, improves the security of battery cell.
The utility model also provides a battery pack, which comprises the battery cell.
In this technical scheme, battery package can directly be applied to foretell electric core, reduces the weeping risk of electric core, improves the holistic security of battery package.
On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the utility model.
The utility model has the positive progress effects that:
according to the utility model, the second sealing part is accommodated in the assembly sinking table, and the fixing part formed at the edge part of the second sealing part is welded with the assembly sinking table, so that the liquid injection hole is sealed, and liquid leakage is avoided; the middle part of the second sealing part is provided with an elastic deformation part which is connected with the first sealing part, the first sealing part seals the liquid injection hole, and when the elastic deformation part is pressed, the sealing of the liquid injection hole can be released, so that the sealing structure after the sealing of the liquid injection hole is released can be subjected to sealing detection when helium is detected, whether the second sealing part is welded and sealed or not is effectively detected, and the liquid leakage risk is reduced.
Drawings
Fig. 1 is a schematic structural view of a sealing structure according to a preferred embodiment of the present utility model.
Reference numerals illustrate:
top cover 1
Assembly sinking table 2
Liquid injection hole 3
First seal portion 4
Liquid hole sealing portion 41
First connecting portion 42
Second seal 5
Fixing portion 51
Elastic deformation portion 52
Second connecting portion 53
Arcuate groove 54
Detailed Description
The present utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments are shown.
In this embodiment, a battery pack and a battery cell are provided, the battery pack includes the battery cell, the battery cell includes a seal structure, the application of this seal structure avoids appearing traditional notes liquid hole 3 and is blocked by the sealing gum nail after, can't detect the gap that sealing gum welding probably exists through helium detection, brings the condition emergence of the potential risk of weeping for the poor battery cell of sealing gum welding.
As shown in fig. 1, the present embodiment provides a sealing structure, which includes a top cover 1, an assembly sinking table 2, a liquid injection hole 3, a first sealing portion 4 and a second sealing portion 5, wherein the liquid injection hole 3 is formed on the top cover 1, the direction from the top end to the bottom end of the top cover 1 sequentially includes the assembly sinking table 2 and the liquid injection hole 3, and the second sealing portion 5 is accommodated in the assembly sinking table 2 and does not fall into the liquid injection hole 3; the first sealing part 4 seals the liquid injection hole 3; the second sealing part 5 comprises a fixing part 51 and an elastic deformation part 52, the edge part of the second sealing part 5 forms the fixing part 51, the fixing part 51 is welded with the assembly sinking table 2, the middle part of the second sealing part 5 protrudes out of the plane of the fixing part 51 to form the elastic deformation part 52, the elastic deformation part 52 is connected with the first sealing part 4, and the elastic deformation part 52 is arranged to enable the first sealing part 4 to move along the pressing direction when being pressed so as to release the sealing of the liquid injection hole 3. Specifically, the second sealing part 5 completely covers the liquid injection hole 3, the fixing part 51 formed at the edge part of the second sealing part 5 is welded with the assembly sinking table 2, and the second sealing part 5 is used for sealing the surface of the plane where the liquid injection hole 3 is located. As shown in fig. 1, the second sealing part 5 further includes second connection parts 53 at opposite sides of the fixing part 51, the fixing part 51 is welded to the bottom surface of the assembly counter 2, and the second connection parts 53 are welded to the side walls of the assembly counter 2.
Wherein, the second sealing part 5 is accommodated in the assembly sinking table 2, and the fixed part 51 formed at the edge part of the second sealing part 5 is welded with the assembly sinking table 2 so as to realize sealing the liquid injection hole 3 and avoid liquid leakage; the middle part of the second sealing part 5 is provided with the elastic deformation part 52 which is connected with the first sealing part 4, the first sealing part 4 seals the liquid injection hole 3, and when the elastic deformation part 52 is pressed, the sealing of the liquid injection hole 3 can be released, so that the sealing detection can be carried out on a sealing structure after the liquid injection hole 3 is released in helium detection, whether the second sealing part 5 is welded and sealed or not is effectively detected, and the liquid leakage risk is reduced. The second connecting parts 53 on two opposite sides of the fixing part 51 are welded with the side walls of the assembly sinking platform 2, so that the second sealing part 5 is more stable in the assembly sinking platform 2 and the sealing effect is better.
As shown in fig. 1, the first sealing portion 4 includes a liquid hole sealing portion 41 and a first connecting portion 42, one end of the first connecting portion 42 is connected to the elastic deformation portion 52, the other end of the first connecting portion 42 is connected to the liquid hole sealing portion 41, an outer peripheral surface of the liquid hole sealing portion 41 is matched with an inner peripheral surface of the liquid injection hole 3, and an outer diameter of the first connecting portion 42 is smaller than an inner diameter of the liquid injection hole 3. In the present embodiment, the liquid hole sealing portion 41 is made of a rubber material. Specifically, the liquid hole sealing portion 41 can be sealed by a rubber stopper made of a rubber material, and has a good sealing effect, easy availability, low cost and good elasticity. Rubber materials may be used, but are not limited thereto.
Wherein, the first sealing part 4 comprises a liquid hole sealing part 41 and a first connecting part 42, the liquid hole sealing part 41 and the elastic deformation part 52 are connected through the first connecting part 42, the structure is simple, and the liquid hole sealing part 41 can be directly pushed to contact the sealing of the liquid injection hole 3 by pressing the elastic deformation part 52; the outer peripheral surface of the liquid hole sealing portion 41 is matched with the inner peripheral surface of the inner periphery of the liquid injection hole 3, and when the outer diameter of the first connecting portion 42 is smaller than the inner diameter of the liquid injection hole 3 so that the elastic deformation portion 52 is pressed, the liquid hole sealing portion 41 can continue to pass through the liquid injection hole 3, so that helium detection is facilitated.
As shown in fig. 1, the side of the elastic deformation portion 52 located at the first sealing portion 4 is correspondingly formed with an arc-shaped groove 54, and the first connection portion 42 is connected in the arc-shaped groove 54. In the present embodiment, the first connecting portion 42 is connected to the lowest point position of the arc-shaped groove 54. The second sealing portion 5 is formed integrally with the elastically deforming portion 52 and is made of the same material. The material thickness at the elastically deforming part 52 is smaller than that of the other part of the second sealing part 5. Specifically, the arc-shaped groove 54 is located on the second seal portion 5.
Wherein, the side of the elastic deformation portion 52 facing the first sealing portion 4 is formed with an arc-shaped groove 54, and the end of the first connection portion 42 is connected in the arc-shaped groove 54, so that the first connection portion 42 is directly pushed to move when the elastic deformation portion 52 is pressed. The first connecting portion 42 is located at the lowest point of the arc-shaped groove 54, so that the pressing is more accurate and labor-saving, and the elastic deformation portion 52 deforms to enable the first sealing portion 4 to move. Wherein, second sealing part 5 is unanimous and integrated into one piece with elastic deformation portion 52 material, easily preparation, and makes other gaps can not appear in whole structure and bring the weeping risk, and sealed effectual. Wherein the material thickness at the elastic deformation portion 52 is smaller than that of the other portions of the second sealing portion 5, so that the pressing effect of the elastic deformation portion 52 is easier and less labor-saving.
The present utility model is not limited to the above-described embodiments, and any changes in shape or structure thereof are within the scope of the present utility model. The scope of the present utility model is defined by the appended claims, and those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and spirit of the present utility model, but these changes and modifications fall within the scope of the present utility model.
Claims (10)
1. The sealing structure is characterized by comprising a top cover, an assembly sinking table, a liquid injection hole, a first sealing part and a second sealing part, wherein the liquid injection hole is formed in the top cover, the assembly sinking table and the liquid injection hole are sequentially arranged in the direction from the top end to the bottom end of the top cover, and the second sealing part is accommodated in the assembly sinking table and cannot fall into the liquid injection hole;
the first sealing part seals the liquid injection hole;
the second sealing part comprises a fixing part and an elastic deformation part, the edge part of the second sealing part forms the fixing part, the fixing part is welded with the assembly sinking table, the middle part of the second sealing part protrudes out of the plane where the fixing part is located to form the elastic deformation part, the elastic deformation part is connected with the first sealing part, and the elastic deformation part is arranged to enable the first sealing part to move along the pressing direction when being pressed so as to release the sealing of the liquid injection hole.
2. The seal structure according to claim 1, wherein the first seal portion includes a liquid hole seal portion and a first connection portion, one end of the first connection portion is connected to the elastically deforming portion, the other end of the first connection portion is connected to the liquid hole seal portion, an outer peripheral surface of the liquid hole seal portion is matched with an inner peripheral surface of the liquid injection hole, and an outer diameter of the first connection portion is smaller than an inner diameter of the liquid injection hole.
3. The seal of claim 2, wherein the liquid pore sealing portion is made of a rubber material.
4. The seal structure according to claim 2, wherein the elastic deformation portion is provided with an arc-shaped groove formed correspondingly on one side of the first seal portion, and the first connection portion is connected in the arc-shaped groove.
5. The seal of claim 4 wherein said first connecting portion is connected to a lowest point of said arcuate groove.
6. The seal structure of claim 4, wherein said second seal portion is integrally formed with said elastically deformable portion of the same material.
7. The seal of claim 6, wherein the material thickness at the elastically deformable portion is less than the material thickness of the other portions of the second seal portion.
8. The seal of claim 1, wherein the second seal further comprises second connection portions on opposite sides of the fixed portion, the fixed portion being welded to the bottom surface of the mounting sink deck, the second connection portions being welded to the side walls of the mounting sink deck.
9. A cell comprising a sealing structure according to any one of claims 1-8.
10. A battery pack comprising the cell of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320143040.6U CN219677528U (en) | 2023-01-18 | 2023-01-18 | Sealing structure, battery cell and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320143040.6U CN219677528U (en) | 2023-01-18 | 2023-01-18 | Sealing structure, battery cell and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219677528U true CN219677528U (en) | 2023-09-12 |
Family
ID=87891749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320143040.6U Active CN219677528U (en) | 2023-01-18 | 2023-01-18 | Sealing structure, battery cell and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219677528U (en) |
-
2023
- 2023-01-18 CN CN202320143040.6U patent/CN219677528U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |